Here are the Images used on the page with their authors and licenses. If you can’t find an image you are looking for here, then i am the author and the license is CC-BY-SA 4.0 or the license and author should be somewhere close to the picture.
MOST IMAGES are also available on FLICKR in this album. The Images are rather small. If you need them in higher resolution for example to print them in a book or so, just get in touch. I am happy to help.